Fire clay is a term applied to a range of refractory clays used in the manufacture of ceramics, especially fire brick. The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of aluminium (Al2O3.2SiO2.2H2O) with or without free silica."
Read more about Fire Clay: Properties, Chemical Composition, Extraction
Famous quotes containing the words fire and/or clay:
“So much of left-wing thought is a kind of playing with fire by people who don’t even know that fire is hot.”
—George Orwell (1903–1950)
“As ye of clay were cast by kind,
So shall ye waste to dust.”
—Thomas Vaux, 2d Baron Vaux Of Harrowden (1510–1566)